1. Unicellular Organisms vs. Multicellular Organisms
Types of Organisms
Unicellular Organisms
vs.
Multicellular Organisms

2. Unicellular Organisms

4. Unicellular Organisms
Definition:
Unicellular organism – an organism made of only one cell
Information:
These organisms are very small and need to be seen with a microscope.

5. Examples of Unicellular Organisms
Amoeba
Bacteria
Protozoa
Unicellular algae
Unicellular fungi
Unicellular yeasts
Paramecium

6. Unicellular Organisms
Benefits
They can reproduce faster
Characteristics
Offspring are identical to each other and to parent(s)
They are not as complex
Do NOT have cell differentiation
They tend have shorter lives than multicellular organisms

7. Images of Unicellular Organisms

8. Multicellular Organisms

9. Multicellular Organisms
Definition:
Multicellular organism – an organism made of two or more cells
Information:
These organisms are able to be seen with the naked eye.
These organisms need all parts of themselves to survive. (with few exceptions)

10. Common Names
Many – celled organisms
Mammals
Birds
Reptile
Fish

11. Examples of Multicellular Organisms
Humans
Cats
Dogs
Insects
Birds
Flowers
Mold
Trees

12. Images of Multicellular Organisms

13. Multicellular Organisms
Benefits
They are able to adapt (have different traits)
They DO have cell differentiation
Characteristics
They consist two or more cells
They are able to grow large
Tend to be more complex than unicellular organisms

14. Exit Slip 1) Identify the multicellular organism: a) All algae
b) Sunflower
c) Amoeba
d) Bacteria
2) Analyze which image is an unicellular organism:
A B C D